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YCN Newsletter 20 - Research in Spot by Emilija Nidžović
Synthesis, processing and characterization of high-entropy spinel oxides
Spinel oxides are metal oxides with the general formula AB2O4 and the spinel structure, where A and B represent different cations located at tetrahedral (A) and octahedral (B) sites. High-entropy spinel oxides (HESOs) contain five or more cations in these positions and have a single-phase crystal structure. These oxides have specific characteristics which make them suitable for a multitude of technological applications (e.g., catalysts, adsorbents, photocatalysts, sensors). Since the pioneering work of Dąbrowa and associates in 2018, various researchers have worked on the synthesis of HESOs, using different precursors and methods, as well as on investigating their properties.
My research focuses on synthesizing HESOs by utilizing the self-propagating room temperature (SPRT) method, which has not been used for this purpose in previous research. The main advantages of this approach are its time- and cost-effectiveness. Using it, I was able to synthesize single-phased high entropy spinel oxides of different compositions. After the synthesis, which produces samples in powder form, spark plasma sintering (SPS) is utilized in order to achieve densification. The sintering process occurs very fast and results in high-density ceramics.
Further steps of my PhD research will include assessing the structural, mechanical, thermal, electrical, magnetic, and other properties of the synthesized and processed samples. The ultimate goal is to contribute to both theoretical understanding and practical application of these materials.
Emilija Nidžović
Department of Materials, Vinča Institute of Nuclear Sciences, National Institute of thе Republic of Serbia, University of Belgrade, Belgrade, Serbia
Last news
Results of the 1st Bioceramics Student Speech Contest
The ECerS Bioceramics Network is delighted to announce the winners of the 1st Bioceramics Student Speech Contest, which took place online from 17 to 18 April 2024!
2024 ECerS International Ceramist Student Exchange Program – 2nd call!
In the frame of the 2024 ECerS International Student exchange program, ECerS is opening a second call to allow grants to European Students to attend the 1st Brazilian Meeting on Ceramic Additive Manufacturing (CeramicAM Brasil) that will be organised by the University of São Paulo in collaboration with the Brazilian Ceramic Society from 19th to 20th September 2024.
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